Well since you went to school together you may know what she likes/dislikes.
Future projections work great.
Let's say there a coffee shop on campus that she would know about and its called... "Pete's Coffee".
You could ask her if shes ever been to Pete's Coffee shop and weather or not she likes it etc and tease her about what kind of drink she gets. Usually it'll be some super long name that makes no sense to most of us guys.
Now when you start to seed an invite you can find a cool coffee shop in your local area. Not Pete's but one out in town (maybe Bob's) and say something like,
"Have you ever been to Bob's Coffee Shop? It's this little out of the way coffee shop with overstuffed chairs, an art gallery, an ever changing light show on the walls and supper yummy deserts and coffee. I'll get my coffee normal and you can get your girlie version. I promise I wont make fun of you as long as you get extra whipped cream on it. That way if you're not fun or act out, I can fling whipped cream at you.
Haha
You do like a good food fight don't you?"
Make sure the description of the coffee shop is off their website or something.
You made it fun and playful without actually asking her out, but in her mind she is picturing having fun with you in a neutral setting. She'll say something like, "Oh! I love a good food fight! But Ill probably fling it at you first."
Either way play along and then figure out a time to meet her there or pick her up. Use false time constraints, hop around to a few other places and get her into bed
Good Luck